I've been trying to help out with getting sage to work properly on Mac, and
I was curious if anyone can explain the purpose of
SAGE_MACOSX_DEPLOYMENT_TARGET to me.
I don't know autoconf at all, but I find that if I configure with
--with-system-python3=no
then SAGE_MACOSX_DEPLOYMENT_TARGET gets set to "legacy". This is
presumably because of the lines
AS_IF([test x$sage_spkg_install_python3 = xno],
[PYTHON_FOR_VENV="$ac_cv_path_PYTHON3"],
[SAGE_MACOSX_DEPLOYMENT_TARGET=legacy])
AC_SUBST([PYTHON_FOR_VENV])
AC_SUBST([SAGE_MACOSX_DEPLOYMENT_TARGET])
located in build/pkgs/python3/spkg-configure.m4.
As far as I can tell, this leads to all sorts of warnings when doctesting
sage. Specifically, I get lots of warnings like:
ld: warning: dylib (/usr/local/lib/libmpfr.dylib) was built for newer
macOS version (10.15) than being linked (10.9)
ld: warning: dylib (/usr/local/lib/libgmp.dylib) was built for newer
macOS version (10.15) than being linked (10.9)
ld: warning: dylib (/usr/local/lib/libgmpxx.dylib) was built for newer
macOS version (10.15) than being linked (10.9)
ld: warning: dylib (/usr/local/lib/libgsl.dylib) was built for newer
macOS version (10.15) than being linked (10.9)
ld: warning: dylib (/usr/local/lib/libntl.dylib) was built for newer
macOS version (10.15) than being linked (10.9)
now I believe that this is caused by src/bin/sage-env which has the
following code:
if [ "$UNAME" = "Darwin" ]; then
export MACOSX_VERSION=`uname -r | awk -F. '{print $1}'`
case "$SAGE_MACOSX_DEPLOYMENT_TARGET" in
legacy)
# legacy behavior of the Sage distribution.
# set MACOSX_DEPLOYMENT_TARGET -- if set incorrectly, this can
# cause lots of random "Abort trap" issues on OSX. see trac
# #7095 for an example.
if [ $MACOSX_VERSION -ge 14 ]; then
# various packages have still have issues with
# two digit OS X versions
MACOSX_DEPLOYMENT_TARGET=10.9
else
MACOSX_DEPLOYMENT_TARGET=10.$[$MACOSX_VERSION-4]
fi
export MACOSX_DEPLOYMENT_TARGET
;;
"")
# Do nothing
;;
*)
# A fixed version set at configure time.
export MACOSX_DEPLOYMENT_TARGET=$SAGE_MACOSX_DEPLOYMENT_TARGET
;;
esac
and I'm trying to understand where all of this is coming from. The trac
ticket this references is 11 years old and so I'm not sure it's an issue
any more.
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